import java.util.Objects;
public class HardDisk {
	    int amount;
	        public void setAmount(int m) {
			        amount = m;
				    }
		    int getAmount(){
			            return amount;
				        }
		        HardDisk() { }
			    HardDisk(int amount) {
				            this.amount = amount;
					        }
			        @Override
				    public String toString() {
					            return super.toString();
						        }
				    @Override
				        public boolean equals(Object obj) {
						        if (this == obj)
								            return true;
							        if (obj == null || getClass() != obj.getClass())
									            return false;
								        HardDisk hardDisk = (HardDisk) obj;
									        return getAmount() == hardDisk.getAmount();
										    }
}


